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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 435 (6.7L Diesel - DTCS P1209 To P2281 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P226B-Turbocharger Boost Pressure Not Responding >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    If there are any communication related DTCs active, perform those diagnostics before continuing with this diagnostic test.

    NOTE:

    If there are any Turbocharger Speed Sensor, Position, or Control circuit related DTCs active, perform those diagnostics before continuing with this diagnostic test.

    1. Turn the ignition on.
    2. With the scan tool, read DTCs.

      Is P226B active?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION - DIESEL diagnostic procedure. Refer to STANDARD PROCEDURE .
  2. ELECTRONIC TURBO ACTUATOR 
    NOTE:

    It is important to drain engine coolant before Electronic Turbo Actuator removal.

    1. Remove the Electronic Turbo Actuator from the turbocharger.
    2. Inspect Electronic Turbo Actuator for a broken drive gear.

      Is the VGT actuator drive gear broken/damaged?

      Yes 

      • Replace the Electronic Turbo Actuator in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. TURBOCHARGER 
    1. Inspect the sector gear on the turbocharger for damage or broken teeth.
    2. Move the sector gear lever on the turbocharger bearing housing up and down from stop to stop.
    3. Check for smooth movement between the stops.
      NOTE:

      The actuator lever must move evenly and crisply as it is moved.

      Does the nozzle slide evenly from stop to stop and are the gear teeth undamaged?

      Yes 

      • Replace the Electronic Turbo Actuator in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Turbocharger assembly in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .